Braking motor cut

[Woosh]

there are cases like with STI levers where it's difficult or unsightly to fit sensors to the brakes.

 

[Marwood Hill]

New brake levers with switches arriving tomorrow. I can only find one empty plug in the contoller. Anyone got any ideas please?

 

[Woosh]

you've got it right.

 

[Marwood Hill]

you've got it right.

Thanks. So do the both go into one plug?

 

[Marwood Hill]

Thanks. So do the both go into one plug?

 

[Woosh]

the black wire is ground, white wire is signal.
if you only have one connector, then it's a bit messy, you need to parallel up the two sets. Try first with one set to make it work then ask the supplier for an adapter to join two sets together.

 

[Marwood Hill]

the black wire is ground, white wire is signal.
if you only have one connector, then it's a bit messy, you need to parallel up the two sets. Try first with one set to make it work then ask the supplier for an adapter to join two sets together.

Thanks for that info. I thought there should be two. I will try it with one but i cannot ask supplier for an adaptor as it’s an Amazon purchase.

 

[Marwood Hill]

If one works can i simply join them together with an AMP connector. Run 4 wires into 2 and into one plug?

 

[Marwood Hill]

Where is Dave?

 

[Woosh]

If one works can i simply join them together with an AMP connector. Run 4 wires into 2 and into one plug?

yes, it'll work.

 

[Marwood Hill]

yes, it'll work.

Thanks, i will try tomorrow.

 

[Marwood Hill]

Me again. Are these black & white wires definitely for brake lever cut-out switches connecting? Reason i’m asking again is my new levers with switches have arrived with the same male plugs on them. I can only try it out if i cut all the plugs off and join the wires up.

 

[Woosh]

I see the problem. Lishui controllers have two female JST connectors for 2 pins for the brakes so it would be just a plug in job. Your controller is different and there is only one cable instead of two for the brakes. You said earlier on that this is the only unused connector.
If it's for the brakes, then joining the two pins with a screwdriver should cut out the motor. If you do that and it works, then you only have to join the wires, black to black, white to white.

Could you post a picture of the label on the controller?

 

[Marwood Hill]

Thanks @Woosh . Yes, putting a screwdriver across the 2 pins stops motor turning so it’s the right wires. Now, to connect both levers into one connector i have to form a loop as my photo. Correct? And just connect one red and one blue to the b&w. Correct?

 

[Woosh]

no, that's the wrong way.
You want red-red, blue-blue.
then join the red pair to the white wire on the controller side, blue pair to the black wire on the controller side.
Here, in the workshop, I would simply re-crimp the wires but you could use a small screw terminal block to join the wires.

https://www.ebay.co.uk/itm/5-Pairs-2-PIN-JST-SM-Plug-Socket-Connectors-Soldered-Crimp/272572750698

 

[Marwood Hill]

no, that's the wrong way.
You want red-red, blue-blue.
then join the red pair to the white wire on the controller side, blue pair to the black wire on the controller side.
Here, in the workshop, I would simply re-crimp the wires but you could use a small screw terminal block to join the wires.

https://www.ebay.co.uk/itm/5-Pairs-2-PIN-JST-SM-Plug-Socket-Connectors-Soldered-Crimp/272572750698

Thanks Woosh. At first i thought that was the correct way to do it. Yes of course it is, silly me. Will try it out tomorrow.

 

[Marwood Hill]

Thanks Woosh. All fitted and working. Much much better to ride now. And so much safer, particularly when moving in small spaces. If you haven’t got them, get them fitted.

 

[Ajax]

Thanks Woosh. All fitted and working. Much much better to ride now. And so much safer, particularly when moving in small spaces. If you haven’t got them, get them fitted.

Not only is it safer to have cut off brakes, its also extends the life of the battery, since it cuts power to moment you apply the break, It also means less breaking force to stop.